Notes increasing concern with the quality of indoor air, allied with the desire to conserve energy by minimising ventilation rates. Examines on the basis of a literature search the sources of indoor air pollution and the characteristics of the pollutants. Pays particular attention to tobacco smoke and its deleterious effects on health. Discusses minimum ventilation rates for rooms in which people smoke. Points out that ventilation alone cannot ensure that the strictest criteria for room air quality are met with smoking.
The technical chapters in the draft proposal for the Ventilation Code differ from the existing one. The technical means for achieving acceptable indoor climate will be described in a new way. In order to secure acceptable quality also in practise (not only in design), new requirements are suggested for design and especially the documentation of design, for commissioning and for maintenance planning. The suggested minimum ventilation rate is 4 l/s per person in rooms where smoking is not allowed and 10 l/s per person if smoking is allowed.
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